It seems almost unbelievable. A 1,000-year-old Mayan manuscript might still predict solar eclipses accurately. The Dresden ...
The Antikythera Mechanism was a hand-cranked system of interlocking bronze gears designed to model the heavens. Turning the crank revealed the positions of the Sun, Moon, and the five planets visible ...
Chris Ramsay on MSN
Solving an ancient Mayan sundial puzzle
An educational look at an ancient Mayan sundial puzzle, explaining its design, historical context, and the steps used to understand how it worked.
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